Lens surfacing device



1943. w. P. CANNING 2,325,740

LENS SURFAC ING DEIICE Filed May 10, 1941 INVENTOR WILLIAM P. CANNING BYm M i A ORNE? Patented Aug. 3, 1943 I It is anobjeot or the invention toprovide n;

lens block.

following description; taken a in connection with closure made herewithis a preferred form only settsl '5 This invention'ielates toimpr'oyeanalogons work. {More vspeilzifieall3 this invention 1 pertains "mmprovemem s in the type (if surfac mg or abrading machines *as presentedin more detanm theco-pending application" o'iE"Lloyd'W.f 1

GOddIL-Serial "No. 251,541. "The aSSigne of the present application-'isthe sarhe as thaltfjo'i the Godduepplioation mentioned-above".

justment means on a surfacing machinebyTro-x tationall y adjustingthespindle withont varying the axial: alignment former position, j I i ii A further object of the inv ention isito provide i means for hol dingthe adjustable "spindle info. predetermined longitudinal-positionandrtherei after rotate thespi-ndleto v ary th dis'tenoe between thecenter i of the lens on the lap and the of I the spindle i from its Itis a further. object of the presentlnvention toprovicle improvedmeanscfor positioning the lens on thelens block laterally withoutchanging the previous major xposition' of the adjustable" A;furtherobject ofthe invention isfto' provide means for varying thegeneral track of therain dom motion"positionalmeans about the-a-xiseof;1 i the driving pin spindle without" hangingthe '30 axial adjustmentofthe spindle per se. 1? n l 7 A1 further objeotfisltokprovide a me:3nsfOr r eQ teinin'g the xialalignment ofthe 'spindle in 1a 2 Qpredetermined position while' varying" ythe "-lens'f positioning meansin-relatiod'to the with a minimum of adjustment f: t i Other and furtherobjects.emdIQdVantuges-of the invention may he and may *beome'f apparen't' to one skilled in the art from a perusal of the iens-block parentthat many changes may'beqnadefin the details otconstruction andarrangementof parts without departing frorn the spirit of thelinven tionas defined in the subjoinedcleims. i It isto 45 be understood thatthe-presentation herewith is nottooonstitute Calimitation.;sineefthe-disa andis only shown for purpose of ill1Referringto thedrawing:v a V l Figi l is wperspective view of acomplete dee vice, pa rtially broken away; to showiflthe: 318115 blockpositional means in relation: to theiadjusts able spindle which :iscarriedwbyvj the 1 support ustration; 50

'I'he, 'adiustmentim 740 v V Q eiial No. 392330 tiong partilly 'broknfaway and pertiall tion showing the details in construction.

nf enlarged view taken; along" lines o-n'iore olearly-definethepositione range fof uomtmhe ensia Heretofore,

support? arm an eoimected theretdby locking clampl m ino'st priorwZr'Vmachines, the 'adjustable spindle was sup'port'ed hyasingle clampinechanisiii whichif loosened the spindle and ohangedthe -or i'ginjalspindle position: when the 5 lens b-loekpositionoll means was changed 1from =onefpdsition-o'n the lens-lap to another position.

The present invention has a separate locking meanswhich permitsthefle'ns blochpo'sition to be che r'i ged' rela tive to the ms;oi'fthe' lens ljap independently ofjthe axial position ofthespi'ndle."

In brdina'ryoperation, the operator of tlie Inachine ,sejts the spindleland 'driving' pin in a positionwhichtheriiechine operator believes isproper for aecomplishing 'the p'firtioulan job "ofi grinding (ar-polishing ethandl Upon inspection, the machineoperatorlusually'findsthatthe lens should be i moved further "away i from; Jo'r} nearerto the" I 1 center! ofthe lap. l n the-formerly' usedtmethod,

the loosening oiithe: spmmecminpm means' releasedthe?pneviousladjustmentroff the, spindle; anda newadjustni'entwas madesby observation.

ficcoldingii'tqisth 21 present inviition a separate gediusting means isprovided 'so thatl'onc'ethe spindle' is *pi'operly nxi'ally aligned afurtheridd justment "be yn'i'fideito "chenge the 3 position ofzthealenskbloek in r'elationito the lep ivithpnt varyingmthe formerexial positioni'of the spindle' per sew'lhisis doneasirnplyby loosening'axwing nut and turning i :knohziori the upper .end' of, the

spindle until the! driving -.pinand its cooperativ'e lens block date inthe desired literal position in relation nto: the" lap. 1 viThis g:simple adjustment wil1-pemiitithe machmegoperator to varythegeneralitraekl ot the random motion while the ma chineisrunning.withoutlosingtheadvantage o' s =feat 1re was not i the ipreviousadjustment; Th1 possible heretoforet;

' b base IiskipgSn QansWmchnm the-pies the edjlistable isipindle relai Vh mes'or this-generaltype ad aniaidjiistgble -splndle which "wascarriedonka ean sr: comprises 1a isleeve j which fits Eover a. portioniofi the spindle softhat j the. sleevejis gripped held; in fixed"position. in relation to the 'suppolit armalooldng mechalnism Whileth'spmqie whicfi is looated within the sleeve may beklfreely rotated to anyone: ofits varioiis' po'sitions and thereaft'e'r looked in 'plaoeprogress; I

a I described in the aforesaid Ref ng to thegs meortv j ud iv i s rtablend mova l a the elon ated: slot :4 inc.

Fig. 1. Theth-m lifi endoi' manhole-thread:

Referring to'the drawing and more particularly to Fig. 1 a lens lappingor lens abrading machine 4 has a bowl 5 connected thereto with a lapv6supported on: a vertical'drive shaft. The'lap 6r is revolvedbiirerolrilidme dnririgsba ibr anr aforesaid Goddu, application." Asupport arm] convenient means. suclr as is in the,

carries a support arm locking mechanism 8, which r 7 locking mechanismgrips the sleeve I5 tapr eyent said'sleeve'from'rotating or moving inany direction in relation to the sapmrnarm,usms, v7

i the'spi-nd-le H3 maybe only varied when the sleeve justable spindlemember, I0 isimt st an within thesleeve l5 by means cfaiknob H, and saidspindle means is lockedltherein bymeans of a wing nut I2 whichprgyentsthe spindle;

member from rotating within the sleeve l5. The support arm '1 is carriedby the lens abracling' machineifor in e s n the pre se -entha- Je i -thla ping o spent a Th deta edzlia sef used in combination with I However,any machine may begs line t p e su e on h workdsl s .e a i QP QlZ n-Shat t e: reiss reenrthe-lens llybesi stantia lr canal tn asin s-t al'desir-- a fp rt ons. Qitm em i l ri t e u ac n o erat ons.

edly en a es the. sc ew. portion cftbehonii e. 8!

12 ,v wh n ccll'areandi tnd hare holes.

cei've the vsleeve. is. It wil bandied hat'the arm 1--After-thesleerez'ii' has been; inserted v through the holes; in thecollal and stud? Z8: and

locking mechanism; from manipulation of hand fi 8 wnr'tendtoacauseitheiinner shoulder tB-tobe drawn toward the adjacent sup-DDR2arm surface is in a locked po'siticrr.

p ;When the sleeve 1-;5is-locked-the spindie lo maybe5Vinsertedtthereins lowersaen'dof the,

arnt "I" a engage the aperture The disclosure in Fig. Bellows the lenslap 6 'havingthe spindle l0 carrying the laterally extending portion 24whichin turn supports the guide pin 25. The lens block 21 has a lens 30(Fig. l) which lens is secured to the lens block ing' ee'hanism, and thelongitudinal portion of 'l 5 is released byreleasing thelsupport armlock- 7 ing mechanism 13 resulting from manipulation'ofr the handlev 8',7

"From theioregoing, random-motion of thelens blockv 21 may have itsgeneral track or course, due to thegentle os- I cillation of thesupporting arm fl, changed by rotationally, adjusting the spindle asdescribed in theaforernentioned Godduapplication. It; is to beunderstood that v whilethe present invention is shown. in conjunctionwith a machine 7 having an oscillating supporting; arm; theinvention maybe usedon anytype of grinding, abrading," polishing or similar machine;which can utializ e the function of moving the lens blocktoa differentradius in relation to the axis of the lap;

In commercial practice the means employed- 7' may involve changes fromthespeciiic disclosureset forth herein and minor changes may readily-'suggest themselves. ,The right to rna'ke certain minor departures iron-lthe specifications and sleeve: i5 engages'theishouider 13 rvhile." -t:hepor-v 1 r tion of the spindle; 1:9Thayinga-reduoed cross section areawill-slide through; the: .sleeve fland have secured on ;.thethreaded?.end 18 thereof the: knob l I whichknob'iszsecuredtob'thethreaded end of. the spindle by" means: of .ailscrew it,

I which may be a pinbriotherfastening means;

A washer 22'- is: placedgon: threaded: portion of: the spindle 10 and:rests tom the upperendso'f the S1eBVEK|5f Th8' wing-nut i2" is;threadedly connected on the threaded 'portionlofi the spindle in and'isused for the purposeenfi lookingl the spindle in afixed-position after.the; rotation; of

the knob. Hi fixes the relation; of: the

I spindle so? that: it: wil ha -nronerlx ads'nstnd. for positio ins theens-block 'iiilalen's-lapiafhe A L w end; f thes in ierlilrhasiiailatera a ex.-

'7 tendin po tion 24 which hasaaitapcmdiapertnre th. sin for;

' Iihefiaee cndltaperedmnortipmiiiilamented to eivinaonelendnr drawingsis retained andHequivalent-parts may V I be used withinthe spirit ofthe" invention as defined by the subjo-ined claims.

Having described my invention; I claim}; 71 a c 1. Asuriacingmachinejbfltheblass described I a member'havingabearing pivota-llyconnected thereyirith, asleeve'in saidbearing, means for clamping saidsleeve in said'bearijngand for si- 1 multaneously locking said bearingagainst-piv-- otal movement, a spindle rotatably mounted in said sleevevand having an onset work holding engaging portion and means for lockingsaid spindle against rotation relative to said: sleeve; V

,2. In a" surfacing machine of; the class: de-

scribed, adjustable-means supporting a spindle havingan offsetworkengaging portion s ai d spindle supporting -means being adjustable in -adirection. longitudinally thereofand tov different angular positions'and'being such as to retain" said spindle againstqindependentlongitudinal movemennameans for locking said spindle sup j porting neans in position of "adjustment, said 1 spindle being rotatable in saidspindle supporting l means, when said;supportingv means is locked inposition ofadjustment and means for looking said spindlelagain'strotation relative tov said spindlesupportingfmeans i 3;."In adevisevofthe characterdescribed for sel ppi ting-workgto be abraded'saiddevice com- Y prising alrnemberh avinga bearing pivotallyconnectedtherewith, means for locking said bearing "in difierentpivotalpositionsirneansin said bear ing for supporting aspindie-havingan offset Work engaging portion; said means being adjustably supportedinthe bearing and'being held in ad'- justed position' by the mEBJIISLfOI'locking said bearing. in differentadjusted positions, said spindle beingrotatable to alter the position ofrtne 29 of the lens block 21 in a wellknown manner. 7

it winbe seen that the H V pp K2', 32,74O onset p oftlon thereot'witliout altering the ad 11 justed position of thesplndle supporting means;1

and means forlocking said spindle against ro'taryf 1 movement relative"to 1 said spindle supporting l means. r

4. In a surfac n achine): the classgdesc ribed means l ported, saidbearing means beingrpivotally1sup- 1 Y ported formovement to difierentangular positions about the axisof said pivot; jineansffon 1 v lockingsaidb rihg means indifferent angular p smom and for simultaneouslylockingsaid spindle supporting means against longitudinal movementrelative tosald bearing means'and and a; tool, asplndle having anoflsetportion for engaging the work holder, means forll rotatablysupporting said spindle, heating means in which 1 5 'i said Spindlesupporting means is slidably" sup? means for locking the splndle"against :rotary 15 means.

' movement relative 1tosaid "spind1e supporting ducing relativ e motionbetiveen av workholdei' Q I

